6. Find the t value for the following data on dominant versus nondominant grip strength. Twenty subjects were measured twice, once with the dominant hand and once again with the nondominant hand....

6)
Ho: r is not significant. There is no significant difference in the mean between the dominant hand and the non-dominant hand. 
V/s h1: r is significant. There is a significant difference in the mean between the dominant hand and the non-dominant hand. 
R = 0.8300
n = 20
Test statistic, t = r*sqrt((n-2)/(1-r^2))    
0.83*SQRT((20-2)/(1-0.83^2))    
6.313    
    
Alpha =    0.05
t(a/2,n-2) = t(0.05/2,20-2) = 2.101
p-value = 2*(1-P(T<|t|) = 2*(1-P(TWith t=6.313 > t(a/2,n-2), I reject Ho and conclude that r is significant. There is a significant difference in the mean between the dominant hand and the non-dominant hand. 
This value is significant at 1% level of significance.
7)
Ho: there is no significant difference in the mean body com- position among prepubescent males and females.
H1: there is a significant difference in the mean body com- position among prepubescent males and females.
     
    SAMPLE 1
    SAMPLE 2
     
    n=
    6
    5
    [Excel function used -> COUNT]
    mean=
    20.50
    20.80
    [Excel function used ->...